package com.xsz.util;

import java.util.Random;

public class KeyUtil {

    public static String getId() {
        Random random = new Random();
        int id = random.nextInt(9000) + 1000;
        return "A"+id+System.currentTimeMillis();
    }


    public static void main(String[] args) {
        System.out.println(KeyUtil.getId());
    }

}
